Instruction Manual

Appendix B: Flow Chart Command Reference Pointe Controller User Guide
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B.3.3 String Left and String Right
These commands can be selected from the String commands list.
When used in a Flow Chart, the String Left and String Right commands extract a
sub-string of a specified length from a given string. The String Left command
extracts from the left side of the string. The String Right command extracts from
the right side of the string.
Parameters for these commands include:
 Destination String – The String tag to which the extracted sub-string
will be written.
To configure the Destination String parameter, click the
button to
open a standard Select String Tag dialog.
NOTE: If the defined length of the Destination String is not long enough
to receive the result of the command, then the output will be truncated.
No error will be generated.
 Source String – The string from which the sub-string will be extracted.
The value of Source String may be a String tag, a literal string enclosed in
single quotes (‘ ’), or some other logical expression that is evaluated every
time the block is executed.
To configure the Source String parameter, click the
button to open a
standard Build String Argument dialog.
NOTE: Source String is not modified by the execution of this command.
 Number Chars – The length of the sub-string, in characters, to be
extracted.
The value of Number Chars may be an Input/Memory/Output tag, a literal
numeric value, or some other logical expression that is evaluated every
time the block is executed.
To configure the Number Chars parameter, click the
button to open a
standard Build Argument dialog.